Frank m



(No Model.) Y

F. M. LA BUITEAUX.

ELECTRIC MOTOR. 110.451,872. Patented May 5,1891.

' 4o method of Winding the field-spools.

UNITED STATES' PATENT OEEICE.

FRANK M. LA BOITEAUX, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-IIALF TOHENRY VARVIG, OF SAME PLACE.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 451,872, dated May 5,1891.

Application filed June 4,1890. Serial No. 354,213. (No model.)

To all whom it may concern:

Beit known that I, FRANK M. LA BoiTEAUX, a citizen of the United States,and a resident of Cincinnati, in the county of Hamilton and State ofOhio, have invented certain new and useful Improvements in ElectricMotors, of which the following is a specification.

My invent-ion relates, primarily, to electric motors for domestic.purposes Which receive io power fromv any Dsource for supplyingelectricity; but it is also applicable to dynamoelectric machines forfurnishing electricity. The invention will be first fully described inconnection with the accompanying drawi 5 ings, and will thenbeparticularly referred to and pointed out in the'claims. i

Referring to thedrawings, in Which like parts are indicated by similarreference-letters Wherever they occur throughoutthe vazo rious views,Figure l is a rear elevation of a fan-motor vembodying my improvementsmounted upon asuitable stand or base to be placed upon the table orother support. Fig. 2 is a side elevation of the upper part of same.Fig. 3 is a plan view, upon an enlarged scale, of the cap of the base orstationary member. Fig. 4 is an inverted plan view of the base whichsupports `the rotating field and its connections. These views 3 and 4are taken on 3o the line as' @o of Fig. 1, looking in oppositedirections. Fig. 5 is a side elevation of the armature and commutator,their shafts and connections. Fig. 6 is a central longitudinal sectionof the pole-pieces and yoke of the electro-magnet. Fig. 7 is an endelevation of the armature-core. Fig. 8 is a side elevation of the same.Fig. 9 is alongitudinal section through the spools and a conterpiece'mounted upon a spindle to illustrate my improved Fig. 10 is anedge elevation of the separating-piece shown in Fig. 9. Fig. Il is anelevation of the spools after Winding and ready to. be placed in thefield. Fig. 12 is a longitudinal section taken through the axis of theshaft,

Fig. 5.

I will first describe my fan-motor as illustrated in Figs. 1 to 4,inclusive, and then describethe separat-e features which are of my oWninvention and which cheapen its construction and enable me to make itmore compact and effective than it could be made if one or more of theolder devices for the same purpose separately considered were employedin the same position. 5

The core of the field-magnet A A has secured upon its poles a yoke B,the arms of Which terminate in bosses b, which furnish the bearings forthe shaft C, which carries the armature D, commutator E, and the fan F.6o The yoke A of the magnet-core has project ing downwardly from it ashort tubular extension a to pass over a small stud-pin g, which issecured in and projects up eccentrically from the top of a cylindricalcap or casing G. This cap G has projecting downwardly from it apivot-pin g', which has its point turned cone-shaped to rest in a step,which is secured in the top of the base or tiipod II. The tripod ispreferably formed of 7o Wrought-metal pipe, which is split up from thebottom and has its split ends turned out- Wardly to form the feet7L,Which are perforated to receive screws, by which the tripod issecured upon the circular base I or to any support, should it bedesirable to dispense with the base and make the motor stationary. Thereis secured to the top of the tripod a disk J, Fig. 3, of vulcanite fiberor other nonconducting material, which has secured upon 8o its face twometal rings K L. In the top of the casing G is placed a disk M, Fig. 4,which has secured upon its under face tivo spring contact-pieces K L.These are arranged to' bear upon the rings K and L when the motor 8 5 isplaced upon its stand, as in Fig. l. The conducting-wires connect thecommutatorbrushes m with the contact pieces K L', while the rings K Lare connected to the binding post n by the Wires which pass 9c throughthe tubular tripod II and through the base I, thebottom of the basebeing recessed to permit the Wires to be connected to the bottom of thebinding-posts. The wires from any source of electricity are connected tothe binding-posts in the usual manner. It is obvious that the positionof the rings K L and brushes K L may be reversed. I have also mounted anincandescent lamp O on top of the yoke B, to be used when desired.

I mount the motor eccentric to the pivotpiii g', thus placing thearmature-shaft out- IOO side the axis of the vertical pivot. 'lhe forceof air causes the motor to revolve around when the fan is in motion andforce the air alternately to all parts of the room. The speed with whichthe motor revolves around upon its vertical pivot may be regulated byadjusting it around its supporting-pin g by means of the set-screw a.The farther the plane of the armature-shaft is placed from the plane ofthe vertical axis g the faster the motor will move around its verticalaxis, and vice versa.

I have shown my motor provided with only one fan; but two maybe used,one on each end of the shaft, in which case one should be larger thanthe other.

I will now describe the specific features of my motor.4 The field-magnetI construct of iron tubing. The pole-pieces a2 are flattened and curvedto conform to the armature. The yoke Ais an ordinary return-bend, intowhich the cores AV are screwed after the fieldspools are in place. Thefield-spools P P are both wound continuously and in the same direction.

Referring to Fig. 9, I place both spools P P upon a mandrel Q., with aseparating-piece R between them. Passing the end of the wire through thehead of the spool P and startingthe mandrel, I wind to the left untilthe opposite end of the spool is reached. 'Ihe wire is then passedbetween the arms of the separating-piece R over to the other spool P',which is wound in the same manner until the opposite end is reached.Then returning, one coil after another is wound upon the spoolsalternately, crossing between the arms of the separating-piece until thedesired amount of wire has been wrapped upon the spools, after whichthey are removed from the mandrel, the separating-piece R withdrawn, andthe spools turned parallel to each other, as seen in Fig. 1l, ready tobe secured in place in the field. The core of the armature is made up ofiron disks D, preferably stamped out to the form shown in Fig. 7. Theend disks are for strength made thicker than the intervening ones andthe edges surrounding the perfoi-ations rounded off to prevent injury tothe insulation on the wire. The disks have intervening paper washers dof the same shape kas the disks. The wire D is wound around the coreinto the perforations d through the slots (Z2. By this means theperiphery of the core is made to revolve in close proximity to the polesof the magnet and the full in ductive force of the magnet is utilized.The wireis also protected by the overhanging portions of the core, whichproject beyond it.

In order to readily remove the armature and commutator for repairs or torewind the armature,I have mounted bot-h armature and commutator upon atubular sleeve S. The ends of this tube are exteriorly screw-threadedand longitudinally slotted for a short distance back from the ends. Thescrewthreaded ends of the tube are made slightly tapering, so that whenthe shaft C, which snugly [its the tube S, is pushed through it and thenuts s tightened the ends of the sleeve will be tightly clamped upon theshaft.

The eommutator-bars have beveled ends and are held in position bytheconcave cups e c' in the usual manner. To remove the armature and itsconnection,it is only necessary to loosen the nuts .S and withdraw theshaft C without disturbing the other parts.

What I claim isl. In an electric motor, the combination of thestationary base, the pivoted cap mounted thereon, the motoreccentrically mounted upon the pivoted cap, and insulated contactpieces,as K K L L', to maintain the circuit between the main and motor wireswhile the motor revolves upon its base, substantially as shown anddescribed. L

2. The combination, substantially as hereinbefore set forth, ofthestationarybase having a step to receive the pivot of a revolving cap,the disk J, secured upon said cap, the insulated rings K L, secured uponthe disk, the swiveled cap pivoted to turn upon said base, the disk M,secured to the cap, the i11- sulated spring contact-pieces K L, securedto the under side of said disk and having their free ends bearing uponthe rings I( L, the field-magnet secured eccentrically upon the pivotedcap, the yoke B b, secured upon the magnet to furnish bearings for themotor-shaft, the shaft journaled in said yoke, the fan secured upon theend of the shaft, the armature, and electrical connections.

3. The combination, substantially as speciiied, in an electricfan-motor, of the motorstand consisting of a stationary base and pivotedcap, the yoke B ZJ, secured upon the magnet to furnish bearings for themotorshaft, the shaft journaled in said yoke, and the fan secured uponthe end of the motorshaft.

4. The combination, in an electric fan-motor, of the stationary base andpivoted cap, a pin projecting up eccentrically from said cap, thelieldmagnet having the downwardlyprojecting tubular extension to litover the eccentric-pin of the cap, and a set-screw to adj ust the magnetaround its support to regulate the speed of the motor around itsbaksepivot, and the armature-shaft and its bearings supported upon thefield-magnet, substantially as shown and described.

5. The combination, in a field-magnet, of the core A A', formed of irontubing and having the poles a2 CL2 flattened and curved, and thetubular, return-bend A, forming the yoke.

6. The combination, substantially as hereinbefore set forth, of thearmature-shaft, a tubular sleeve fitting' said shaft and having its endsscrew-threaded and slotted, tightenin g-n uts upon the screw-threadedends of said sleeve to clamp it upon the shaft, and the armature securedupon said sleeve.

7. The method of winding t-he field-spools,

IOO

IIO

ing separating-piece, substantially as hereinbefore set forth.

FRANK M. LA RorTEAUX.

Witnesses:

GEO. J. MURRAY, FRANK S. DAVIS.

